Valve.



A. W. CASH.

VALVE.

APPLICATION TILED JUNE 4, 1908, 909,545, v Patented Jan. 12, 1909.

2 SHEETS-SHEET'l.

)QTNESSES I JNVENTOH' f4, 41 7%; 72% um lwm 4570mm. I

A. W. CASH.

Patented Jan. 12, 1909.

2 SHEETS-SHEET 2.

INVENTOI? WITNESSES 1 moval and replacement of the valve to rovide easy access to the different parts of ARTHUR W. CASH, OF NEWARK, NEW JERSEY.

VALVE Specificationof Letters Patent.

Application filed June 4, 1998.

Patented J an. 1'2, 1909.

Serial No. 436,553..

To all whom it may concern:

it known that I, ARTHUR citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain Improvements in Valves,of which the following is a specification.

The objects of this invention are to secure a construction impervious to leakage; to enable the valve proper to be readily adjusted in its seat to take up wear; to facilitate re- W. CASH, a

the valve, and removable valve seats which can be readily renewed; to secure a strong construction, not liable to get out of order, and to obtain other advantages and results as may be brought out in the following description.

Referrin to the accompanying drawings, in which li e numerals of reference indicate the same parts in the several figures,.Figurc 1 is a plan of my improved valve in its preferred form; Fig. 2' is an end view of the same, and Fig. 3 a. vertical central longitudinal section on line 3-3, Fig. I; Fig. 4 :hows in plan a slightly modified construcion.

In said drawings, 10, 10 indicate the two sections or halves of the valve casing which are adapted to be clamped firmly together by bolts and hold between themselves the valve proper 11- in operative engagement with annular seat r s 19, 19. Each casmg section lO'is cha r hbered at its face next the other, as at 12, and has a port 13 extendmg, centrally rearward from said chamber. Around the said chambers 12 the sections have annular surfaces 14 adapted to fit tightly together. Preferably these joining faces 14 are stepped, as shown, so that when they are brought together, the casing sections and particularly the seat rings. thereof are held in perfect alinement. This is easily and accurately accomplished, since the joinin surface 1% and entire interior of each va ve casing section is turned at one operation. in alathe.

Within the space formed by the chambers 12 is arranged the valve proper 11 which,

is provided: with an integral spindle 15 projecting outwardly through the chamber casinghin the plane of division of its sections,

a suitable stufling boxand packing 16 to. prevent leakage. The valve proper is adapted to be-rotated by this spindle, its side valve proper will close said ports. Preferably the valve proper 11 is spherical, as shown, but obviously its dimension in the direction of the length of the spindle 15 could be varied so long as all planes at right angles to the length of the spindle cut the surface of the valve proper in circles, so that its sides always engaged the seat rlngs notwithstanding rotation. The shape of the valve proper could thus vary from a sphere to a cylinder, but for practical reasons the .spherical form is best to manufacture and easiest to fit perfectly.

The seats for the valve proper in the casing sections are provided by annularly re cessing the interior walls of each section at the union of its port 13 with the chamber 12, as at 17. Into this recessis then placed a bed or layer 18 of yielding or soft material, such as rubber, asbestos or the like, and upon the said cushion 18 is arranged a seat ring 19, which is of somewhat harder material, such as rubber mixed with asbestos, metal, or various other compositions commonly used for valve seats. This seat ring 19 projects slightly into the chamber 12- so that the valve proper engages it alone, and further distant from the recess 17, a considerable space is left betweenthe walls of the valve proper and walls of the chamber 12, as is shown. This space not only avolds a metal to metal contact, whichmy invention is designed to prevent, but furthermore provides a space to receive sediment, scale or other foreign matter which may creep 1nto the valve and which would cut, abrade and destroy its working surfaces if retained therebetween. The said space between the two seat rings, in the chamber 12, insures a harmless retention of such foreign matter until the valve is cleaned. The seat ring. 19 is ofoourse shaped at its exposed surface. to fit the valve proper, that is, it is spherically concaved transversely of itself, as shown, It will be noted that the recesses 17 open. at

- sections are clamped together in assembling one side into the ports 13 and at their ends into the chamber 12. Thus not only the seat rings 19 are freely exposed to the valve proper 11, but also the beds or layers 18 are freely exposed at their inner edges to the passageway of the ports. Thus as the valve the valve, superfluous portions of the beds or layers 18 may be squeezed out or escape into the ports. Perfect fit of the various parts of t e valve one to another is thus secured.

Preferably the outer side of each section 10 has around theport 13 an annular spherically concave bearing 20 which receives a correspondingly shaped annular extensionv or rojection 21 on a coupling member 22, sai coupling member having a passage 23 in alinement with the port 13 and being threaded at its other end as at 24 to receive the pipe to which the valve is to be fitted. Each of these coupling members 22 at opposite ends of the valve, has at its opposite sides extensions 25, 25, which project outwardly beyond the sides of the valve and its casing, and are adapted to receive bolts 26 extending longitudinally of the pipe line and provided with tightening nuts 27. Ohviously these .bolts 26 bind to ether not only the couplings 22 and the valve casing as a whole, but they also serve to bind together the two sections 10, 10 of the valve casing.

The said curved bearings 20 are preferably spherically concaved and are for the purpose of securing proper contact of the coupled members in case the pipes or threaded connections are not in true alinement, as 1s common. Any one of the four bearm surfaces, between the couplings and the va ve casing or between the valve proper and its seat rings, is therefore readily accessible by simply loosening the bolts 26. Preferably, the valve casing sections 10 have lugs 28 by which said sections can be held together with small bolts 29. The purpose of this is ,that when a valve is to be entirelyremoved and another one substituted, the large bolts 25 need only be loosened a little, when the valve can he slipped out without its casing sections fallin a art, or such a removed valve can be han le or transported convemently as an entirety. Obviously, upon removal of the small bolts 29, the valve casmg sections 10, 10 can be separated to get at the valve seats, and the valve proper or the seat rings can be removed. In this way the seat rings can be readil and conveniently renewed as needed, or di erent kinds of seat rings can be inserted at different times to adapt the valve to different uses and conditions. The S00 and range of usefulness of the valve, an its adaptability, are therefore greatly increased.

Obviously, under conditions where the coupling members 22 are not employed, the

ends of the pipeare threaded directly into the ends 30 of valve casing sections 100, 100, as shown in Fig. 4', and short bolts 31 engaging lugs 32 of the two valve casing sections 100, 100, are employed for connecting said sections.

While I have shown and described the spindle 15 of the valve proper as being integral therewith, and prefer to make the same so, it Will be understood that the spindle could be made in a separate piece and suitably connected to the valve so as to be rigid and strong. Any suitable construction of this feature of the valve could be employed without departing from the spirit and scope of the invention. The integral spindle is the most satisfactory however, and

the sectional construction of the valve casing above described provides for its ready and convenient assembling, as claimed below.

Having thus described the invention, what I claim as new is: i

1. In a valve, the combination of a casing comprising sections forming between themselves an inclosed chamber-and having ports leading into said chamber from opposite sides thereof and annular recesses at the inner ends of said ports, seat rings in said recesses, a valve proper simultaneously engaging both said seat rings and adapted to rotate within said chamber to place said ports in communication or to close them, means for joining said casing sections together, and means for turning said valve.

2. In a valve, the combination of a casing comprising sections forming between them selves a chamber and having ports leading into said chamber from opposite sides thereof and annular recesses at the inner ends of.

'dle projecting from said body between said casing sections,v and means for forcin said casing sections together to bring sai seat rings into impervious relation to said valve proper.

' 3. In a valve, the combination of a casing comprising sections forming between themselves an inclosed chamber and having ports leading into said chamber from opposite I sides thereof and concentric annular outer and inner recesses at the meeting ends of said sections, seat rings in said inner recesses, a rotary valve between said seat rings, the

said outer recesses being at the meeting edges of the sections and said edges thus adapted to fit together and position the sections with the said seat rings at opposite sides of the valve, and means for jommg said casing sections together.

4. In a valve, the combination of a casing comprising sections forming between themselves an inclosed chamber and having ports leading into said chamber from opposite sides thereof and annular recesses at the inner ends of said ports, flat annular cushions in said recesses presenting free inner edges to the passageway of said ports, seat rings in said recesses upon said cushions, a valve proper between and engaging said seat rings adapted to rotate within said chamber to place said ports in communication or to close them, means for joining said casing sections together, and means for turning said valve.

-5. The combination of a valve havin casing sections providing chambers at their adjacent sides and bearings at their opposite outer sides, seat rings in said chambers, a valve proper between said sections fitting said seat rings, coupling members each fitting at one end the outer bearing of a casing section, and bolts extendingbetween said coupling members and holding the same in engagement with the casing sections and said casing sections in engagement with the valve proper. I I I ARTHUR W. CASH. In the presence of-- ETHEL B. REED,

BERTHA S. FULTON. 

